Cruise control issue
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Thread: Cruise control issue

  1. #1
    Saab Junior
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    Cruise control issue

    Hi all.

    Just recently I have purchased a 2010 Aero TTiD. Unfortunately the cruise control doesn't work, the light comes on but it won't set the speed. Had it hooked up to Tech2 this showed no errors and showed the switches are working correctly (Stalk, Clutch & Brake). Even though Tech2 said all was fine we swapped the stalk out and still wouldn't work.

    So as you can imagine I'm pretty stumped on what it could be! Any help/ideas are appreciated!

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  3. #2
    Administrator aerojon's Avatar
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    Re: Cruise control issue

    this may sound daft,but how are you activating it..
    My 9-3 audio,2 x cd changers,aux-in & Bluetooth audio streaming..

    Is still running Factory oe coils with a tune..

  4. #3
    Administrator kez's Avatar
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    Re: Cruise control issue

    Quote Originally Posted by aerojon View Post
    this may sound daft,but how are you activating it..
    logical especially as tech2 gave no faults

  5. #4
    Saab Afficionado
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    Re: Cruise control issue

    I'm assuming here that you do know the cruise control won't work unless you are travelling at more that 26mph?

    Have a read through this thread as it also mentions about the pedals:

    http://www.saabscene.com/forum/threa...ntrol-question

  6. #5
    Saab Junior
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    Re: Cruise control issue

    Making sure I've braked first. Then speeding up to above the 25-26 mph limit, flicking the switch (light comes on) go to set the speed and nothing. Tried the foot under pedal trick, still nothing.

    Strange how Tech2 shows the stalk is working and the pedal switches are working too...

  7. #6

    Re: Cruise control issue

    Sounds like the cruise control feature has got screwed up.
    I'd disconnect the battery for an hour and it should force a reset of the ecu.

  8. #7
    Administrator kez's Avatar
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    Re: Cruise control issue

    have you tried setting it at highway speeds

  9. #8
    Saab Junior
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    Re: Cruise control issue

    Tried that aswell Kez. I will try resetting the ecu next. Car has only done 60k so I wouldn't expect it to be honest...

  10. #9

    Re: Cruise control issue

    The Haynes book gives no detail on the cruise control. No surprise.
    However the components would be the CIM to the main engine ECU, both of which have to be working otherwise you wouldn't be able to drive at all.
    My bet is an ECU reset and it might restart the function
    Let us know how you get on.

  11. #10
    Saabisti
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    Re: Cruise control issue

    Its the switch. Its always the switch...

    My money's on the clutch pedal switch. Tech2 has no way of knowing if its working or not as there's no secondary sensor as far as I'm aware.

    Could equally be the brake switch unless Tech2 cross references the cruise switch with the brake light switch - though if it was it'd throw up a "touch brakes" warning when you activated cruise.

    Yep, definitely the clutch switch
    Last edited by HammerBlow; 11-07-2014 at 03:51 PM.

  12. #11
    Saab Junior
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    Re: Cruise control issue

    Quick update - Had battery disconnected for approx 1 and a half hours no joy still. Any ideas on what next?

    Brake and clutch switches?

  13. #12

    Re: Cruise control issue

    Might be a daft question, but you are activating the cruise control by pushing up or down on the toggle switches at the end of the stalk aren't you ?

  14. #13
    Saab Junior
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    Re: Cruise control issue

    Just to be clear I have had a 9-3 before this with cruise control and know how to operate it.

    The above is not ment to sound snotty just making you all aware

  15. #14

    Re: Cruise control issue

    understood, but I had to ask..

    As another poster said :
    "Its the switch. Its always the switch... "

    Has to be a pedal switch then as you've replaced the stalk, I can't think of anything else and out of ideas I'm afraid.

    Hope you sort it.

  16. #15
    Saab Junior
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    Re: Cruise control issue

    Understandable. Well I'll make the switch the next step and obviously update you all.

    Appreciate the help everyone!

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